Relação entre perfil de densidade e ligação interna de painéis OSB de Pinus spp

Abstract

This study aimed to determine the density, by gravimetric method and X-ray densitometry, of Oriented Strand Boards (OSB) produced with Pinus taeda and Pinus elliottii var. elliottii x Pinus caribaea var. hondurensis, to obtain densitometric profiles and observe their correlation with the internal bond. The average density of the panels produced was determined by the methodology of X-ray densitometry and the gravimetric method, using 3 specimens (50 × 50 mm) per treatment. After apparent density measurement, the 24 specimens were subjected to the internal bond test. The gravimetric method applied for the determination of apparent density of the panels presented significantly higher results compared with the densitometric method. It was possible to observe that the minimum density of the board, obtained by the method of X-ray densitometry, has a strong influence on its average density. Correlation was observed between the apparent densities of the panels and the results of internal bond.